The Hubble Space Telescope has recently captured a striking image of a supernova-hosting galaxy, located approximately 600 million light-years away in the constellation Gemini. This image, taken about two months after the discovery of supernova SN 2022aajn, reveals a bright blue dot at the center, signifying the explosive event. Although SN 2022aajn was first announced in November 2022, it has not yet been the subject of extensive research. However, Hubble's interest in this particular supernova lies in its classification as a Type Ia supernova, a type that is key to measuring cosmic distances. Type Ia supernovae occur when a star's core collapses, and they are particularly useful for astronomers because they have a predictable intrinsic brightness. No matter how far away a Type Ia supernova is, it emits the same amount of light. By comparing its observed brightness to this known luminosity, astronomers can calculate how far away the supernova — and its host galaxy — are from...